Alfonso developed a production-ready Node.js MCP server for the punkpeye/awesome-mcp-servers repository, enabling secure execution of JavaScript snippets in Docker-based sandboxed environments. This architecture prioritized isolation and scalability, supporting safe LLM-driven automation and laying groundwork for future MCP features. In the ogcio/logto repository, Alfonso enhanced backend reliability by seeding user data for comprehensive end-to-end testing and resolving a data duplication issue in the Public Service V2 configuration. His work demonstrated proficiency in Go, Node.js, and Docker, with a focus on robust test data management and secure backend development. The contributions reflect thoughtful engineering and attention to data integrity.